/Engine/Source/Runtime/PakFile/Public/IPlatformFilePak.h
Read a list of (Filename,FPakEntry) pairs from a provided enumeration, attempt to encode each one, store each one in the appropriate given encoded and/or unencoded array, and populate the given Directories to map each filename to the location for theFPakEntry
typedef [TFunction](API\Runtime\Core\GenericPlatform\TFunction)< [FPakEntryPair](API\Runtime\PakFile\FPakEntryPair) &()> ReadNextEntryFunction